Short answers, pulled from the story.
Gypsy derives from the mistaken belief, widespread in 16th-century England, that Romani people came from Egypt. Early spellings included Egipcian, Egypcian, and gypcian. As the word evolved, the initial capital E was dropped, leaving the modern form with a lowercase g.
According to the Oxford English Dictionary, the first recorded usage of the word in English dates to 1514. Both Edmund Spenser and William Shakespeare used the word during the same century.
The name Romani shares its origin with Lom and Dom, all tracing back to a Sanskrit word describing a man of low caste who lived by singing and music. The Sanskrit stem connects to drumming and may have been borrowed from a Dravidian language, though the ultimate origin remains uncertain.
Tsinganoi is a Greek term used across much of continental Europe for Romani people. It derives from Byzantine Greek athinganos, combining a- meaning not and thingano meaning to touch, making it equivalent to untouchable. The term was originally applied to the sect of the Melchisedechians before being transferred to the Romani people.
The United Nations and the US Library of Congress use Romani as the noun for the ethnic group, while the World Roma Congress and the Council of Europe recommend reserving Romani for the language and culture and using Roma as the collective noun for the people. Both terms have been in use in English since the 19th century.
Some Romani people and modern dictionaries consider gypsy a racial slur with pejorative connotations implying illegality and irregularity. However, many community members also embrace the term with pride. A 2019 British House of Commons committee report noted that while some found it offensive, many stakeholders and witnesses were proud to associate themselves with it.